autocatalysis vs contact action

autocatalysis and contact action both are nouns.

Word	Noun	Adjective	Verb	Adverb
autocatalysis	Yes	No	No	No
contact action	Yes	No	No	No

As nouns, contact action is a hypernym of autocatalysis; that is, contact action is a word with a broader meaning than autocatalysis:

autocatalysis: catalysis in which the catalyst is one of the products of the reaction
contact action: acceleration of a chemical reaction induced by the presence of material that is chemically unchanged at the end of the reaction

Other hypernyms of autocatalysis include catalysis.

autocatalysis (noun)	contact action (noun)
catalysis in which the catalyst is one of the products of the reaction	acceleration of a chemical reaction induced by the presence of material that is chemically unchanged at the end of the reaction